{
  "annotation_id": "781f1f87-20ac-41c8-a0cf-31cb22c62dc4",
  "date_created": "2026-03-02T18:01:52.287000Z",
  "date_modified": "2026-03-02T18:01:52.287000Z",
  "file_hash": "279011a353e1ba8615de03a8774411937f36576a354d50a6cd380ce639f43d7f",
  "private": false,
  "record": {
    "abstract": "The detailed study of a quantum free particle on a pointed plane is\nperformed. It is shown that there is no problem with a mysterious ``quantum\nanticentrifugal force\" acting on a free particle on a plane discussed in a very\nrecent paper: M. A. Cirone et al, Phys. Rev. A 65, 022101 (2002), but we deal\nwith a purely topological efect related to distinguishing a point on a plane.\nThe new results are introduced concerning self-adjoint extensions of operators\ndescribing the free particle on a pointed plane as well as the role played by\ndiscrete symmetries in the analysis of such extensions.",
    "arxiv_id": "quant-ph/0206176",
    "authors": [
      "K. Kowalski",
      "K. Podlaski",
      "J. Rembielinski"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.032118",
    "journal_ref": "Phys. Rev. A, 66 (2002) 032118-1--032118-9",
    "title": "Quantum mechanics of a free particle on a pointed plane revisited",
    "url": "https://arxiv.org/abs/quant-ph/0206176"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b0438eed-6a72-4acd-8ce8-d29b26f8055b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}